It has been said a nation can have either welfare or open borders — but not both — in the same way one can have a cool air-conditioned room in a blazing desert or an open door — but not both. It is the inequality between the outside and inside temperatures that the door is intended to preserve.

The problem of keeping the room cool while leaving the door open is now consuming Angela Merekel’s European Union as the refugee problem grows in political size. Can the EU have no internal borders if it lacks an external one? If there’s no way of keeping benefits in, what is the meaning of out?
— Read on pjmedia.com/richardfernandez/the-revolt-comes-to-germany/